As audio compression standard of ATSC-HDTV, Dolby AC-3 is a high-quality, low-complexity multichannel audio coder which is used for more and more applications.

If your amplifier is connected internally or externally with a Dolby digital (ac-3) processor, you should use the setup menus for the amplifier to specify the parameters of your speaker system.

Dolby digital audio AC-3 is introduced as a digital audio compressing technology based on human ear psychoacoustics models.